UBUNTU-CVE-2024-28820

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Source
https://ubuntu.com/security/CVE-2024-28820
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-28820.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2024-28820
Upstream
Published
2024-06-27T16:15:00Z
Modified
2025-10-24T05:09:08Z
Severity
  • 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Buffer overflow in the extractopenvpncr function in openvpn-cr.c in openvpn-auth-ldap (aka the Three Rings Auth-LDAP plugin for OpenVPN) 2.0.4 allows attackers with a valid LDAP username and who can control the challenge/response password field to pass a string with more than 14 colons into this field and cause a buffer overflow.

References

Affected packages

Ubuntu:16.04:LTS

openvpn-auth-ldap

Package

Name
openvpn-auth-ldap
Purl
pkg:deb/ubuntu/openvpn-auth-ldap@2.0.3-6.1ubuntu0.16.04.1?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.0.3-6.1
2.0.3-6.1ubuntu0.16.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "openvpn-auth-ldap",
            "binary_version": "2.0.3-6.1ubuntu0.16.04.1"
        }
    ]
}

Ubuntu:18.04:LTS

openvpn-auth-ldap

Package

Name
openvpn-auth-ldap
Purl
pkg:deb/ubuntu/openvpn-auth-ldap@2.0.3-6.1ubuntu2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.0.3-6.1ubuntu1
2.0.3-6.1ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "openvpn-auth-ldap",
            "binary_version": "2.0.3-6.1ubuntu2"
        }
    ]
}

Ubuntu:20.04:LTS

openvpn-auth-ldap

Package

Name
openvpn-auth-ldap
Purl
pkg:deb/ubuntu/openvpn-auth-ldap@2.0.4-1ubuntu2?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.0.4-1ubuntu1
2.0.4-1ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "openvpn-auth-ldap",
            "binary_version": "2.0.4-1ubuntu2"
        }
    ]
}

Ubuntu:22.04:LTS

openvpn-auth-ldap

Package

Name
openvpn-auth-ldap
Purl
pkg:deb/ubuntu/openvpn-auth-ldap@2.0.4-1ubuntu4?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.0.4-1ubuntu4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "openvpn-auth-ldap",
            "binary_version": "2.0.4-1ubuntu4"
        }
    ]
}

Ubuntu:24.04:LTS

openvpn-auth-ldap

Package

Name
openvpn-auth-ldap
Purl
pkg:deb/ubuntu/openvpn-auth-ldap@2.0.4-3build1?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.0.4-3build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "openvpn-auth-ldap",
            "binary_version": "2.0.4-3build1"
        }
    ]
}

Ubuntu:25.04

openvpn-auth-ldap

Package

Name
openvpn-auth-ldap
Purl
pkg:deb/ubuntu/openvpn-auth-ldap@2.0.4-4?arch=source&distro=plucky

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.0.4-3build1
2.0.4-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "openvpn-auth-ldap",
            "binary_version": "2.0.4-4"
        }
    ]
}

Ubuntu:25.10

openvpn-auth-ldap

Package

Name
openvpn-auth-ldap
Purl
pkg:deb/ubuntu/openvpn-auth-ldap@2.0.4-5?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.0.4-4
2.0.4-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "openvpn-auth-ldap",
            "binary_version": "2.0.4-5"
        }
    ]
}